[NTP Snippets] Cleanups from clang-tidy

components/ntp_snippets/bookmarks/bookmark_last_visit_utils_unittest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/ntp_snippets/bookmarks/bookmark_last_visit_utils.h"
 
 #include <string>
 
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/bookmarks/browser/bookmark_model.h"
 #include "components/bookmarks/browser/bookmark_node.h"
 #include "components/bookmarks/test/test_bookmark_client.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
 using bookmarks::BookmarkModel;
 using bookmarks::BookmarkNode;
 
 using testing::IsEmpty;
 using testing::SizeIs;
-using testing::UnorderedElementsAre;
 
 namespace ntp_snippets {
 
 namespace {
 
 const char kBookmarkLastVisitDateKey[] = "last_visited";
 
 std::unique_ptr<BookmarkModel> CreateModelWithRecentBookmarks(
     int number_of_bookmarks,
     int number_of_recent,
@@ skipping 79 matching lines @@
 
   const int max_count = number_of_recent - 1;
   std::vector<const bookmarks::BookmarkNode*> result =
       GetRecentlyVisitedBookmarks(model.get(), max_count, max_count,
                                   threshold_time(),
                                   /*creation_date_fallback=*/false);
   EXPECT_THAT(result, SizeIs(max_count));
 }
 
 }  // namespace ntp_snippets